@Book{BDG201890688655, title = "\textquestiondown Hacia una sociedad sin clases?", author = "Perpi\~{n}a Rodriguez, Antonio", publisher = "Madrid : Euramerica", editor = "Euramerica", series = "(Colecci\'{o}n Mundo Mejor ; 4)", URL = "http://biblioteca.galiciana.gal/es/consulta/registro.do?id=493610", year = "1956", }